Stuffing box lubrication



E- A- F. PRESSER STUFFING pox LUBRICA'I'ION 'Jgh. 3, 1950 INVENTOR. Em: A. E Presser A TTORNE Y.

Patented 351950 UNITED; STATES PATENT OFFICE p f I 2,493,312 r a Q STUFFING BOX LUBRICATION Eric A. F. Presser, East Chicago, Ind. 7 Application May 2, 194s, Serial No. 666,530

1 Claim. (].308-331) My invention relates to improvements in stu'fiing box lubrication and it especially includes the structure described in the following specification.

The purpose of my present invention is to provide a special means for distributing the lubricant; that insures a continuation of the distribution of lubricant even though the ordinary packing may become hardened; and that provides spacer rings to divide the usual packing into separate groups.

I This application is a further development of the stufling box application filed by me on April 20, 1945, under Serial No. 589,347, and the structure of the spacer rings is made the subject of my application, Serial No. 666,591, filed on May 2, 1946, now abandoned With these and other related ends I illustrate on the accompanying drawing such instances of adaptation as will show the broad principles of the invention without limiting myself to the specific details shown thereon and described herein.

Fig. 1 is a side elevation in section.

Fig. 2 is a cross section of Fig. 1 on line 2-2.

Fig. 3 is a cross section of Fig. 1 on line 33.

Figs. 2 and 3 are on a reduced scale.

In the practical adapting of my invention, I may use whatever changes in structure that the exigencies of varying conditions may demand, without departing from the broad spirit of the invention.

My stufling box is composed of a housing I that may be a part of the frame of a pump or similar structure. It has threaded into it the upper stufling box tubular sleeve 2. A long gland 3 is secured into sleeve 2 to control the packing 4 on each side of a spacer ring 5. This long gland forms the seat 6, for a second or lower stufling box 4, which contains a similar arrangement of packings 4 and spacer ring 5 as is found in both stumng boxes. A bottom gland screws into the long or upper gland 3 to'complete the lower stuffing box.

This invention is specially adaptable to centrifugal'pumps that circulate acids, or in the use of centrifugal air compressors which. handle chemical gases and the packings protect the bearing which is thus maintained free from corrosion.

Between the two groups of packings 4 there is a phosphor bronze bearing bushing lubricated from a source of oil grooves I3. This source of lubricant is in an annular chamber 9, formed between the cylindrical member 2, which forms the upper. stufllngbox seat and a side pro jection I3 01' the long 8, that is cant.

cup 34 is connected to the .annular chamber by the passage 35.

The long gland 3 has axial grooves II in which the reduced diameter of set screws I2 are seated. This prevents the rotation of the bearing bushing 3. A long tubular sleeve I4 is threaded onto the upper stufilng box member 2 to close the annular lubricant chamber 9. An adjusting sleeve I5 is threaded onto I4 at the bottom. It serves to adjust the long gland 3 by reason of an annular flange I6 external of the gland at its bottom as it is engaged by an internal flange I I of the adjusting sleeve I5. A locking ring I8 holds the sleeve against movement, and the short bottom gland I is also held in adjustment by a similar locking ring I 9.

Vertical oilholes 20 are drilled upward from the annular lubricant chamber 9. and also downward to supply oil. The gland 3 is kept from rotation by a set screw I2 in the tubular member 3 and which engages slots II in the gland 3.

All of the axial adjustments of the different members are kept in alignment independently of any threaded portions. This insures an efficient and long life for all the connected parts. The two stufling box groups are adjustable independently of each other. When the upper box is compensated by a movement of the long gland the lower box is shifted bodily along the shaft 24, without any change in the relation of its packing to the shaft. When its condition requires adjustment then such adjustment is made entirely independent of the upper box.

To keep the parts from unscrewing a set screw 25 is threaded in the sleeve I4. It abuts the part 2. each other, at .21 between parts 2 and I; 28 between parts 2 and I4; 29- between parts I4 and I5; and 30 between parts 1 and 3. Similarly the part I is prevented from unscrewing from the part 2, by a set screw 36.

The self aligning diameters are 3i for I and 2; 32 for 2 and I4; and at 33 between parts 3 and I4. The part 3 may be turned on its axis when needed by slots 26 in the flange It by a conventional spanner wrench.

Figures 2 and 3 show the relation of the oil holes and the slotted portion of the part 3, also the annular chamber 9 for the storage of lubri- The oil holes at the right are displaced about 30 degrees from the horizontal which shows the right hand side of Figure 1 without the oil holes shown on the left hand side of the figure. All these oil holes may be spaced otherwise and gland 3. Any suitable oil changed in number.

The difierent parts are threaded into 7 The invention. as stated above, provides indeendent adjustment of the separate stumng boxes without destroying the axial alignment of the entire assembly.

Transverse oilholes II are iormedinthe bush- 5 ings 9 and the gland I. and transverse oil holes uinthepartslandileadtothespaoerrings i. 'Iheoilholesllareextendedatflsoasto maintain excess to the packing I when even though the packing material 4 has been com- 10 pressed by the movements of the gland 9 and the gland I, to change the lengthwise position of the spacer rings.

What I claim is:

In a detachable Journal bearing unit a tubular member forming a seat for packing, along gland for adjusting this packing and said gland being 1 held against turning by means of a plurality of setscrews, a separate similar diameter packing seat in the long gland, a packing in both packing seats, a separate gland in the long gland for the similar diameter packing, a separate bearing bushing between the two packing seats and '4 theirpaekinnandashattinm mentwith bothpaekingsandthebearingbushing.

IRICAJLPRESSIR.

REFERENCES CITED The following references are of record inthe me or this patent:

UNITED STATES PATENTS 

